/*
 * Javascript Humane Dates
 * Copyright (c) 2008 Dean Landolt (deanlandolt.com)
 * Re-write by Zach Leatherman (zachleat.com)
 * 
 * Adopted from the John Resig's pretty.js
 * at http://ejohn.org/blog/javascript-pretty-date
 * and henrah's proposed modification 
 * at http://ejohn.org/blog/javascript-pretty-date/#comment-297458
 * 
 * Licensed under the MIT license.
 */
 
function humaneDate(date, compareTo){
    var lang = {
    		preDate:'Fa',
            postDate: '',
            now: 'Ara Mateix',
            minute: 'Minut',
            minutes: 'Minuts',
            hour: 'Hora',
            hours: 'Hores',
            day: 'Dia',
            days: 'Dies',
            week: 'Setmana',
            weeks: 'Setmanes',
            month: 'Mes',
            months: 'Mesos',
            year: 'Any',
            years: 'Anys'
        },
        formats = [
            [60, lang.now],
            [3600, lang.minute, lang.minutes, 60], // 60 minutes, 1 minute
            [86400, lang.hour, lang.hours, 3600], // 24 hours, 1 hour
            [604800, lang.day, lang.days, 86400], // 7 days, 1 day
            [2628000, lang.week, lang.weeks, 604800], // ~1 month, 1 week
            [31536000, lang.month, lang.months, 2628000], // 1 year, ~1 month
            [Infinity, lang.year, lang.years, 31536000] // Infinity, 1 year
        ],
        isString = (typeof date == 'string'), 
        	date = isString ? new Date(('' + date).replace(/-/g,"/").replace(/[TZ]/g," ")) : date,
        	compareTo = compareTo || new Date(),
        seconds = (compareTo - date +
                        (compareTo.getTimezoneOffset() -
                            // if we received a GMT time from a string, doesn't include time zone bias
                            // if we got a date object, the time zone is built in, we need to remove it.
                            (isString ? 0 : date.getTimezoneOffset())
                        ) * 60000
                    ) / 1000,
        token;
 
    if(seconds < 0) {
        seconds = Math.abs(seconds);
        token = '';
    } else {
        if (lang.postDate !=''){
        	token = ' ' + lang.postDate;
        }else{
        	if (lang.preDate !=''){
        		token = lang.preDate + ' ';
        	}else{
              	token = '';
            }
        }
 
    }
 
    /*
     * 0 seconds && < 60 seconds        Now
     * 60 seconds                       1 Minute
     * > 60 seconds && < 60 minutes     X Minutes
     * 60 minutes                       1 Hour
     * > 60 minutes && < 24 hours       X Hours
     * 24 hours                         1 Day
     * > 24 hours && < 7 days           X Days
     * 7 days                           1 Week
     * > 7 days && < ~ 1 Month          X Weeks
     * ~ 1 Month                        1 Month
     * > ~ 1 Month && < 1 Year          X Months
     * 1 Year                           1 Year
     * > 1 Year                         X Years
     * 
     * Single units are +10%. 1 Year shows first at 1 Year + 10%
     */
 
    function normalize(val, single)
    {
        var margin = 0.1;
        if(val >= single && val <= single * (1+margin)) {
            return single;
        }
        return val;
    }
 
    for(var i = 0, format = formats[0]; formats[i]; format = formats[++i]) {
        if(seconds < format[0]) {
            if(i === 0) {
                // Now
                return format[1];
            }
 
            var val = Math.ceil(normalize(seconds, format[3]) / (format[3]));
            if (lang.postDate !=''){
            	return val + 
                    ' ' +
                    (val != 1 ? format[2] : format[1]) +
                    (i > 0 ? token : '');
            }else{
            	return (i > 0 ? token : '') + 
            	val + 
                ' ' +
                (val != 1 ? format[2] : format[1]);
            	
            }
        }
    }
};